TMX Group Inc. Declares Dividend Of $0.38 Per Common Share

The Board of Directors of TMX Group Inc. declared a dividend of $0.38 on each common share outstanding, payable on August 27, 2010 to shareholders of record at the close of business on August 13, 2010.

TMX Group hereby advises all shareholders of record on August 13, 2010 that the dividend to be paid on the common shares on August 27, 2010 is designated as an "eligible dividend" for Canadian income tax purposes.

For the results of the quarter ended June 30, 2010 for TMX Group Inc., please click on the following link: http://www.tmx.com/en/investor_relations/index.html.